Syd Barrett and insanity

Syd Barrett was the lead singer in Pink Floyd - until he went insane. If you listen closely to the lyrics of some of their later songs, there is a lot of references to insanity and Syd.

Brain damage:

And if the cloud bursts, thunder in your ear
You shout and no one seems to hear
And if the band you're in starts playing different tunes
I'll see you on the dark side of the moon

This is a reference to the fact that insane Syd, while performing, would play/sing different songs than the other band members.

Shine On You Crazy Diamond:

Remember when you were young, you shone like the sun.

Shine on you crazy diamond.
Now there's a look in your eyes, like black holes in the sky.
Shine on you crazy diamond.
You were caught on the cross fire of childhood and stardom,
Blown on the steel breeze.
Come on you target for faraway laughter, come on you stranger,
You legend, you martyr, and shine!

Wish you were here:

So, so you think you can tell Heaven from Hell,
blue skies from pain.
Can you tell a green field from a cold steel rail?
A smile from a veil?
Do you think you can tell?
And did they get you to trade your heroes for ghosts?
Hot ashes for trees?
Hot air for a cool breeze?
Cold comfort for change?
And did you exchange a walk on part in the war for a lead role in a cage?
How I wish, how I wish you were here.
We're just two lost souls swimming in a fish bowl, year after year,
Running over the same old ground.
What have we found? The same old fears.
Wish you were here.

The two fears I have is to die in a car accident or become insane. I would prefer the first option.